Such notice shall be sufficient in form if it contains a request by the landlord to the tenant to leave the premises, or if it states the intention of the tenant to leave the same, and it need not state the time when the tenant is requested to leave the same, or when the tenant intends to do so. P.L.L., 1860, § 887 1888, §863 1915, §849 1927, §849 1930, §849 1938, §1130 1949, §733 1969, §9-18 1898, ch. 123, §849